O-LevelChemistryRates of Reaction5070/12 · May/June 2019 · Q171 Mark

The table shows the energy released by the complete combustion of some compounds. Which compound releases the least energy when 1 g is completely burned?

Abenzene

Bheptane

Coctane

Dpropane

✓ Correct answer

A: benzene

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Topic: Rates of Reaction, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source: O-Level Chemistry, May/June 2019 Paper 1 Variant 2, question 17.

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